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Preprint ARTICLE | doi:10.20944/preprints202305.2004.v1

Design of Intelligent Nonlinear H₂/H_∞ Robust Control Strategy of Diesel Generator Based CPSOGSA Optimization Algorithm

Yidong Zou, Boyi Xiao, Jing Qian, Zhihuai Xiao

Subject: Engineering, Energy And Fuel Technology Keywords: diesel generator; speed and excitation control; robust control; intelligent optimization

Online: 29 May 2023 (09:43:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1824.v1

Selection of Ideal MSW Incineration and Utilization Technology Route Using MCDA for Different Waste Utilization Scenario and Variable Conditions

Zakariya Kaneesamkandi, Ateekh Ur-Rehman, Yusuf Siraj Usmani

Subject: Engineering, Energy And Fuel Technology Keywords: waste combustion; grate combustion; fluidized bed combustion; energy from waste; desalination from waste; district cooling from waste; multi criteria decision analysis

Online: 26 May 2023 (03:16:45 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1786.v1

Enhancing the Levelized Cost of Hydrogen with the Usage of the By-Product Oxygen in a Wastewater Treatment Plant

Franziska Maria Hönig, Ganesh Deepak Rupakula, Diana Duque-Gonzalez, Matthias Ebert, Ulrich Blum

Subject: Engineering, Energy And Fuel Technology Keywords: alkaline water electrolysis; hydrogen; by-product oxygen; wastewater treatment plant; levelized cost of hydrogen; power-to-gas

Online: 25 May 2023 (09:46:15 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1773.v1

A Review of a Candidates for a Validation Data Set for High-Assay Low-Enrichment Uranium Fuels

Mark D. DeHart, John D. Bess, Germina Ilas

Subject: Engineering, Energy And Fuel Technology Keywords: HALEU; High-Assay LEU; Advanced Reactors; Validation; DOE; NRC

Online: 25 May 2023 (08:45:44 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1687.v1

Challenges for District Heating in Poland

Karolina Talarek, Anna Knitter-Piątkowska, Tomasz Garbowski

Subject: Engineering, Energy And Fuel Technology Keywords: district heating; renewable energy sources; heat demand prediction; energy storage; low carbon heating

Online: 24 May 2023 (04:25:26 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1652.v1

Evaluating Urban Solar Potential and BEV Charge Cycle Using Real-Data Techniques

Steve Zerafa, Brian Azzopardi, Craig Mifsud

Subject: Engineering, Energy And Fuel Technology Keywords: Drones; Photovoltaics; Electric Mobility; Solar Energy; Spatial analysis

Online: 23 May 2023 (11:11:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1585.v1

A Pattern Recognition Method for Offshore Drilling Gas Kick and Overflow Diagnosis

Yang Xu, Jin Yang, Zhiqiang Hu, Dongsheng Xu

Subject: Engineering, Energy And Fuel Technology Keywords: Offshore drilling; overflow; kick; gas invasion; pattern recognition; threshold method

Online: 23 May 2023 (05:36:50 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1564.v1

Rethinking Notions of Energy Efficiency in a Global Context

Patrick Moriarty, Damon Honnery

Subject: Engineering, Energy And Fuel Technology Keywords: buildings energy efficiency; climate change; energy efficiency; feedback effects; passive solar energy; renewable energy; transport energy efficiency; urban heat island

Online: 23 May 2023 (04:32:41 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1534.v1

A Review of State-of-the-art and Short-Term Forecasting Models for Solar PV Power Generation

Wen-Chang Tsai, Chia-Sheng Tu, Chih-Ming Hong, Whei-Min Lin

Subject: Engineering, Energy And Fuel Technology Keywords: Predictive models; Weather research and forecasting (WRF); Solar irradiance forecasting; Solar PV power forecasting; Renewable energy sources.

Online: 23 May 2023 (02:32:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1511.v1

Impact of Water Properties on the Performance of PEM Electrolyzer

Zaid Binhazzaa, Zyead Almutairi

Subject: Engineering, Energy And Fuel Technology Keywords: Keywords: Hydrogen production; PEM electrolyzer; Proton Exchange Membrane; Water electrolysis, Electrolytic hydrogen production

Online: 22 May 2023 (10:56:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1218.v1

Ranking of Electricity Accumulation Possibilities: Multicriteria Analysis

Edgars Kudurs, Dagnija Blumberga, Kristiāna Dolge, Erlanda Atvare

Subject: Engineering, Energy And Fuel Technology Keywords: Energy; Storage; Renewable; Decision making analysis; TOPSIS; Innovations

Online: 17 May 2023 (09:58:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1042.v1

Assessment of Aerodynamic Plates Subjected to Von Kármán Vortex Street for Enhancing the Wind Energy Generation in Blade-less Devices

John Zuluaga, Santiago Ricardo, Andrés Oostra, Gilberto Materano, Apostolos Spanelis

Subject: Engineering, Energy And Fuel Technology Keywords: Bladeless Generators; Wind Generator; Von Kármán Vortex Street; LES; Optimisation

Online: 15 May 2023 (12:31:35 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.0935.v1

A Comprehensive Review of Organic Rankine Cycles

José Camilo Jiménez, Alexis Ruiz, Alejandro Pacheco, Wilfrido Rivera

Subject: Engineering, Energy And Fuel Technology Keywords: Microturbines; organic Rankine cycles; polygeneration; power production; waste heat recovery

Online: 12 May 2023 (11:07:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0867.v1

Optimizing Building Thermal Insulation: The Impact of Brick Geometry and Thermal Coefficient on Energy Efficiency and Comfort

Ioannis Makrygiannis, Konstantinos Karalis, Theodosios Dragonas

Subject: Engineering, Energy And Fuel Technology Keywords: thermal insulation; energy efficiency; environmental impact

Online: 11 May 2023 (13:54:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0696.v1

Experiments on Steam Injection Into Preformed Steam Chambers of Various Shapes for Maximum Condensate Recovery

A. Medina, Diego Benjamin Garcia, A. Lopez-Villa, Benjamin Castillo-Morales, Georgiy Polupan

Subject: Engineering, Energy And Fuel Technology Keywords: Extra-heavy oil recovery; SAGD; Heat and mass transfer in porous media; Experiments in porous media

Online: 10 May 2023 (07:12:16 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0674.v1

A Novel Method of Forecasting Chaotic and Random Wind Speed Regimes Based on Machine Learning with the Evolution and Prediction of Volterra Kernels

Amir Abdul Majid

Subject: Engineering, Energy And Fuel Technology Keywords: error estimation; Korhonen network; machine learning; extraction algorithm; Volterra kernels; wind speed prediction

Online: 10 May 2023 (03:10:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0621.v1

Model-Based State-Of-Charge and State-Of-Health Estimation Algorithms Utilizing a New Free Lithium-Ion Battery Cell Dataset for Benchmarking Purposes

Steven Neupert, Julia Kowal

Subject: Engineering, Energy And Fuel Technology Keywords: SOC; SOH; Dataset; Ageing; Model; Estimation

Online: 9 May 2023 (09:11:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0590.v1

Non-catalytic and Catalytic Conversion of Fruit Waste to Synthetic Liquid Fuel via Pyrolysis

Eylem Pehlivan

Subject: Engineering, Energy And Fuel Technology Keywords: Catalytic pyrolysis; plum seed; TGA; bio-oil; zeolite

Online: 9 May 2023 (07:51:05 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202305.0550.v1

Photocatalytic Biohydrogen Production Using ZnO from Aqueous Glycerol Solution with Aid of Simultaneous Cu Deposition

Mahmudul Hassan Suhag, Ikki Tateishi, Mai Furukawa, Hideyuki Katsumata, Aklima Khatun, Satoshi Kaneco

Subject: Engineering, Energy And Fuel Technology Keywords: hydrogen production; aqueous glycerol solution; simultaneous Cu deposition; ZnO; photocatalyst

Online: 9 May 2023 (03:39:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0456.v1

Hybrid Off-Grid Energy Systems Optimal Sizing with Integrated Hydrogen Storage Based on Deterministic Balance Approach

Alaa Selim, Mohemed Elshimy, Ghada Amer, Ilham Ihoume, Hasan Masrur, Josep M. Guerrero

Subject: Engineering, Energy And Fuel Technology Keywords: Energy Systems; Hybrid; off-grid; Solar PV; Wind turbines; Hydrogen system; Sizing optimization; Deterministic approach

Online: 8 May 2023 (05:31:31 CEST)

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Integrating numerous renewable resources has been extensively researched and studied to create a dependable energy system. This study investigated the best techno-economical hybrid energy system configuration while using hydrogen energy to keep the system's energy balanced. Additionally, this study aims to determine the best hybrid system configuration for the location under investigation. A novel technique of DBM (Deterministic Balanced Method) was introduced to determine the total annual energy output for the project's lifetime. This approach is used to contrast the outcomes of other HOMER software tools. Then, using HOMER, it is possible to confirm the sizing optimization results for the suggested method by comparing the power ratings and yearly energy output. A detailed comparison between our proposed method and HOMER Pro has been conducted for validation and verification. Our method has been rigorously tested in various hybrid off-grid energy systems, ensuring its applicability and reliability across different scenarios and configurations. The results of our study indicate a high degree of similarity between the proposed approach and HOMER pro for computing annual energy power for the studied energy systems. Specifically, our analysis revealed that the difference between the approaches was within a range of 5%, indicating a high level of consistency and reliability in our method. These findings suggest that our approach can be confidently applied to determine the appropriate size of hybrid energy systems accurately. Overall, our study provides valuable insights into the development of effective sizing methodologies for hybrid energy systems. After considering the amount of solar radiation and wind speed gathered by global weather data platforms like NASA and METEONORM, this paper has also included a real case study of the Cairo International Airport's hybrid renewable energy production systems. To guarantee the viability of this study, the system design was founded on an actual load that was researched and simulated. A cluster of distributed networks was finally proposed to use the excess energy and enable energy conversion processes to be used in industry and transportation applications.

Preprint ARTICLE | doi:10.20944/preprints202305.0303.v1

NMR-Based Analysis of Fluid Occurrence Space and Imbibition Oil Recovery in Gulong Shale

Fei Xu, Hanqiao Jiang, Ming Liu, Shuai Jiang, Yong Wang, Junjian Li

Subject: Engineering, Energy And Fuel Technology Keywords: nuclear magnetic resonance; shale oil; occurrence space characteristics; imbibition

Online: 5 May 2023 (05:08:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0296.v1

Effective Electrical Conductivity Performance of a 25% Antimo-Nial Lead Alloy-Air Battery Cell Made With Esr Open Cell Foams As Electrode

Amel Hind Hassein-Bey, Abd-Elmouneïm Belhadj, Selma Toumi, Hichem Tahraoui, Mohammed Kebir, Abdeltif Amrane, Chebli Derradji, Abdallah Bouguettoucha, Jie Zhang, Lotfi Mouni

Subject: Engineering, Energy And Fuel Technology Keywords: Metal-air batteries cell; electrode materials; open cell foam; replication process; effective conductivity

Online: 5 May 2023 (04:24:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0265.v1

Single and Double-sided Coated Gas Diffusion Layers used in Polymer Electrolyte Fuel Cells: A Numerical Study

Isaac Chukwuemezu Okereke, Mohammed S. Ismail, Derek Ingham, Kevin Hughes, Lin Ma, Mohammed Pourkashanian

Subject: Engineering, Energy And Fuel Technology Keywords: Polymer electrolyte fuel cells; Gas diffusion layers; Microporous layer; Double-sided coating; Contact resistance; Porosity

Online: 4 May 2023 (11:16:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0229.v1

Short-term Prediction of PV Power Based on Combined Modal Decomposition and NARX-LSTM-LightGBM

Hongbo Gao, Shuang Qiu, Jun Fang, Nan Ma, Jiye Wang, Kun Cheng, Hui Wang, Yidong Zhu, Dawei Hu, Hengyu Liu, Jun Wang

Subject: Engineering, Energy And Fuel Technology Keywords: PV Power Prediction; Mode Decomposition; NARX; LSTM; LightGBM

Online: 4 May 2023 (08:16:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0086.v1

Chemical Modeling of Constant Volume Combustion of Mixture of Methane and Hydrogen Used in Spark Ignition Otto Cycles

Michel Feidt, Gheorghe Dumitrascu, Ana Georgiana Lupu

Subject: Engineering, Energy And Fuel Technology Keywords: closed constant volume combustion; Otto cycle; operational constraints; flue gases composition; harmful noxious

Online: 2 May 2023 (11:01:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1277.v1

Design Features and Numerical Investigation of Counter-Rotating VAWT with Co-Axial Rotors Displaced from Each Other Along the Axis of Rotation

Ihor Shchur, Volodymyr Klymko, Shengbai Xie, David Schmidt

Subject: Engineering, Energy And Fuel Technology Keywords: vertical axis wind turbine (VAWT); dual-rotor wind turbine; counter-rotating wind turbine; dual-rotor permanent magnet synchronous generator (PMSM); control system; computational fluid dynamics (CFD); actuator line modeling (ALM)

Online: 28 April 2023 (10:14:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1100.v1

Evaluation of Sugarcane Cutting Residues for the Production of Solid Biofuel

Sandra Peña, Denisse Bermeo, Flor Reyes, Camen Forero, Francisco Velasco, Eduardo Arango

Subject: Engineering, Energy And Fuel Technology Keywords: Biomass; pellets; biofuel; binder; sugar cane cutting.

Online: 28 April 2023 (04:02:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1098.v1

The European DEMO HCPB Breeding Blanket: Design Status at the End of Pre-Concept Design Phase

Guangming Zhou, Francisco Alberto Hernández, Pavel Pereslavtsev, Béla Kiss, Anoop Retheesh, Luis Maqueda, Jin Hun Park

Subject: Engineering, Energy And Fuel Technology Keywords: European DEMO; Helium Cooled Pebble Bed; Tritium Breeding Blanket; Design

Online: 28 April 2023 (03:46:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1058.v1

A Micro-Nuclear Power Generator for Space Missions

Olukayode L. Ayodele, Doudou N. Luta, Mohammed T. Kahn

Subject: Engineering, Energy And Fuel Technology Keywords: RTG; MMRTG; Li-ion battery, spacecraft; energy storage

Online: 27 April 2023 (07:51:43 CEST)

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The increased interest in space activities, structural health monitoring, and terrestrial monitoring in hostile and inaccessible zones places a high demand for energy sources for autonomous systems. Conventional electrochemical batteries that could be used are plagued by low energy storage density, short life, disposal of unwanted batteries, and related undesired recharging or replacement maintenance requirements, which endangers the environment. Fuel cells and solar energy sources being exploited to mitigate the adverse effect of environmental threats posed by batteries and fossil fuels are costly to acquire and maintain. The availability of energy sources derived from waste heat from radioactive decay for domestic appliances and industrial equipment will also help alleviate the effects of climate change, which continues to threaten the environment due to fossil fuel energy-based sources that emit harmful carbon monoxide into the atmosphere. A combination of energy from waste heat, harvested via thermoelectricity and existing battery technology to produce a hybrid energy source, can guarantee secured energy for an extended period. Based on the Seebeck effect, thermoelectric energy generation may considerably contribute to sustainable energy development and meet the power demand for spacecraft applications. Modeling of the energy from waste heat, the Li-ion battery, and a hybrid energy source are considered, and their performances are established using the MATLAB/Simulink environment. Results confirmed the comparative advantage of the hybrid energy source over and above the respective electrochemical batteries and waste heat energy sources regarding effectiveness and performance efficiency. Since batteries are required to operate in a constantly changing environment, the effects of temperatures on batteries were investigated. The results show that the performances of batteries decrease with a decrease in ambient temperature and that the higher the maximum operating capacity, the higher the battery's internal temperature.

Preprint ARTICLE | doi:10.20944/preprints202304.1045.v1

A New Temperature Correction Method for NaI(Tl) Detectors Based on Pulse Deconvolution

Jianming Xie, Liu Yang, Jinglun Li, Yuzhong Zhang, Sheng Qi, Wenzhuo Chen, Ye Chen, Hang Xu, Wuyun Xiao

Subject: Engineering, Energy And Fuel Technology Keywords: NaI(Tl) detector; temperature correction; pulse deconvolution; trapezoidal shaping

Online: 27 April 2023 (04:56:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1012.v1

Control of Wind Farm Power Output for Green Hydrogen Production without a Grid Connection

Adam Stock, Matthew Cole, Mathieu Kervyn, Fulin Fan, James Ferguson, Anup Nambiar, Benjamin Pepper, Michael Smailes, David Campos-Gaona

Subject: Engineering, Energy And Fuel Technology Keywords: wind farm control; green hydrogen; electrolysis; battery lifetime; wind turbine control

Online: 27 April 2023 (03:24:59 CEST)

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Green hydrogen is likely to play an important role in meeting the net zero targets of countries around the globe. Hence, producing green hydrogen cheaply and effectively is an important area of research. One potential option for green hydrogen production is to run electrolysers directly from offshore wind turbines, with no grid connection and hence no expensive cabling to shore. The removal of the grid presents an unusual integration challenge. The variable nature of wind turbines and farms results in a power output that can fluctuate more quickly than the electrolyser’s ability to respond without significantly stressing the electrolyser. Thus, the use of a battery, with the wind farm, becomes essential to even out some of the power variations that the electrolyser cannot deal with. In this work, a proof of concept of a wind farm control methodology designed to reduce variability in wind farm active power output is presented. Smoothing the power supplied by the wind farm to the battery reduces the size and number of battery charge cycles and helps to increase battery lifetime. Considering off-grid wind farms which exclusively power an electrolyser, this work quantifies the impact of the wind farm control method on battery lifetime for wind farms of 1, 4, 9 and 16 wind turbines. This is achieved using suitable wind farm, battery and electrolyser models. As an example, for the largest wind farm studied, consisting of 16 x 5 MW wind turbines, batteries with a lifetime of 15 years have approximately a 30 % reduction in required capacity (reduced from 14 MWh to 10 MWh) compared to operating without wind farm control. It is found that reducing the variability of the active power output of wind farms through the wind farm control methodology presented can have a significant impact on battery degradation and hence on battery lifetime. Hence, wind farm control can reduce the required battery capacity for a given lifetime or it can increase the lifetime of a given battery capacity. The work presented shows that wind farm control could play a critical role in reducing the levelised cost of green hydrogen produced from wind farms with no grid connection and paves the way for the design and testing of a full implementation of the wind farm control.

Preprint ARTICLE | doi:10.20944/preprints202304.0972.v1

Experimental Investigation on the Stochastically Forced Rijke-Type Supercritical Thermoacoustic Systems

Hao ZHANG, Yuanhao WANG, Xinyan LI, Geng CHEN, Yuze SUN

Subject: Engineering, Energy And Fuel Technology Keywords: Thermoacoustic instability; Ornstein–Uhlenbeck-type colored noises; Supercritical bifurcation; Coherence resonance

Online: 26 April 2023 (08:27:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0962.v1

Characterizations of the Non-linear Responses of a Non-premixed Flame to the Low Frequency Acoustic Excitations

Deng Pan, Chenzhen Ji, Tong Zhu

Subject: Engineering, Energy And Fuel Technology Keywords: non-premixed flame; flame describing function; nonlinear response; bluff-body; convective velocity

Online: 26 April 2023 (05:47:24 CEST)

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The heat release response of the flame to acoustic excitation is a critical factor for understanding combustion instability. In the present work, the nonlinear heat release response of a methane-air non-premixed flame to the low frequency acoustic excitations is experimentally investigated. The flame describing function (FDF) was measured based on the overall CH* chemiluminescence intensity and the velocity fluctuations obtained by two-microphone method. The CH* chemiluminescence images and the schlieren images were analyzed to reveal the mechanism of nonlinear response. The excitation frequency ranges from 10Hz to 120Hz. The forced relative velocity fluctuation amplitude ranges from 0.10 to 0.50. The corresponding flame Strouhal number (Stf) ranges from 0.43 to 4.67. The study has shown that the flame length responds more sensitively to changes in excitation amplitude when subjected to relatively high frequency excitations. The normalized flame length (Lf/D) decreases from 3.79 to 2.37 with the increase of excitation amplitude at excitation frequency of 100Hz. The number of oscillation zones along the flame increases with increasing excitation frequency, which is consistent with the increase of the Stf. The low-pass filtering characteristic of FDF is caused by the dispersion of multiple oscillation zones, as well as the cancellation effect of the adjacent oscillation zones under relatively high frequency excitation. The cancellation effect of the positive and negative oscillation zones with various Stf is main mechanism for the local gain peak and valley. When two adjacent oscillation regions have approximate amplitudes, the overall phase-lag becomes more sensitive to changes in excitation frequency and amplitude. This sensitivity leads to nonlinear anomalous changes in the phase-lag near the frequency corresponding to the gain valley. The calculated disturbance convection time is consistent with the measured time delay in the short flame scenario. Future research is necessary to establish whether the observed agreement occurs due to the oscillation zone consistently occurring proximate to the flame's center of mass, coupled with a precise determination of the average convective velocity.

Preprint ARTICLE | doi:10.20944/preprints202304.0954.v1

Propagation Law of Hydraulic Fracture across the Coal-Rock Interface under the Co-Effect of Natural Fractures and Tectonic Stress

Dijie Zhu, Wenda Li, Dong Niu, Hecheng Xiao, Xiaoxia Song

Subject: Engineering, Energy And Fuel Technology Keywords: Pore pressure cohesive element; Indirect fracturing; Natural fracture; Tectonic stress; Horizontal well position

Online: 26 April 2023 (04:12:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0945.v1

Hydropower Scenarios in the Face of Climate Change in Ecuador

Sebastian Naranjo-Silva, Diego Punina-Guerrero, Luis Miguel Rivera-González, Kenny Escobar-Segovia, Jose David Barros-Enriquez, Jorge Armando Almeida-Dominguez, Javier Alvarez del Castillo

Subject: Engineering, Energy And Fuel Technology Keywords: Climate change; Ecuador; energy; hydroelectric; pathways; renewable; scenarios

Online: 26 April 2023 (03:36:09 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202304.0943.v1

Information Technology Interventions in the Implementation of Grid-Connected Rooftop Solar Projects in India

Ishan Purohit, Ashish Kumar Sharma, Pallav Purohit

Subject: Engineering, Energy And Fuel Technology Keywords: Information Technology; Rooftop Solar; Consumer proliferation; Net-metering; Bankability; State Nodal Agencies; DISCOMS

Online: 26 April 2023 (03:33:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0925.v1

Nuclear-Renewable Hybrid Energy System with Load-Following for Fast Charging Station

Otavio Lopes Alves Esteves, Hossam A.Gabbar

Subject: Engineering, Energy And Fuel Technology Keywords: Nuclear-Renewable Hybrid Energy Systems; transportation electrification; SMR; modeling and simulation

Online: 25 April 2023 (10:45:06 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.0917.v1

A Review of Modern Wind Power Generation Forecasting Technologies

Wen-Chang Tsai, Chih-Ming Hong, Whei-Min Lin, Chia-Sheng Tu, Chiung-Hsing Chen

Subject: Engineering, Energy And Fuel Technology Keywords: Predictive models; Weather research and forecasting (WRF); Uncertainty; Wind forecasting; Ultra short term and Short term; Wind power generation

Online: 25 April 2023 (10:10:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0874.v1

Effects of Rotational Speed on Performance Prediction of Pump As Turbine For energy generation and Green Development

Geoffrey Bentum-Micah, Sampson Agyapong Atuahene, Lianyu Cai, Daniel Adu, Qian Xu Sheng

Subject: Engineering, Energy And Fuel Technology Keywords: Pump-as-turbine; performance; flow characteristics; rotational speed; small hydro-power

Online: 25 April 2023 (03:47:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0850.v1

Analysis Driving Factors of Energy Consumption in the Road Transport Sector of the City in Douala, Cameroon

Fontaine Dubois Bissai, Bienvenu Gael Fouda Mbanga, Cyrille Adiang Mezoue, Severin Nguiya

Subject: Engineering, Energy And Fuel Technology Keywords: decomposition analysis; driving factors; energy consumption; logarithmic -mean divisa Index method; road transport

Online: 24 April 2023 (10:47:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0770.v1

Estimation of Energy Harvesting by Thermoelectric Cement Composites with Nanostructured Graphene and Metallic Oxides

Sampad Ghosh, Bidyut Baran Saha

Subject: Engineering, Energy And Fuel Technology Keywords: cement composites; energy harvesting; graphene nanoplatelets; metallic oxides; thermoelectric properties.

Online: 23 April 2023 (04:42:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0634.v1

Flow and Pressure Drop Characteristics of Methane/Ethane Mixture in the Spiral Tube under Sloshing Condition

Fengzhi Li, Zhongyun Tian, Yiqiang Jiang, Wenke Zheng, Jie Chen, Shulei Li

Subject: Engineering, Energy And Fuel Technology Keywords: Advanced manufacture; Energy security; Heat exchange; Cleaan energy

Online: 20 April 2023 (08:40:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0418.v1

About Controllability in the Energy Sector. Including the Global One. Problems, Possible Solutions and Prospects

Vladimir Kodkin, Vitaly Nemkov

Subject: Engineering, Energy And Fuel Technology Keywords: control system; oscillatory processes; mixing regulation; heat exchanger; valve; energy saving measures

Online: 17 April 2023 (07:18:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0289.v1

Numerical Analysis of SO2 Absorption inside a Wet Scrubber

Amedeo Amoresano, Giuseppe Langella, Paolo Iodice, Silvia Roscioli

Subject: Engineering, Energy And Fuel Technology Keywords: Seawater scrubber; SOX; Absorption

Online: 13 April 2023 (03:32:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0275.v1

Water Chemistry Impact on Activated Corrosion Products Assessment in Tokamak Reactors

Martina Molinari, Matteo D’Onorio, Giovanni Mariano, Nicholas Terranova, Gianfranco Caruso

Subject: Engineering, Energy And Fuel Technology Keywords: Activated Corrosion Products; Water Chemistry; OSCAR; RAVEN; Nuclear Safety

Online: 12 April 2023 (12:14:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0256.v1

Reduced Carbon Emissions in Lubumbashi, DR Congo, Using a Hybrid Diesel-Photovoltaic Power System

Ilunga Kajila Rice, Hanhua Zhu, Cunquan Zhang, Arnauld Robert Tapa

Subject: Engineering, Energy And Fuel Technology Keywords: Hybrid power system; Diesel generator; PV system; Simulation; HOMER Pro; Emission

Online: 12 April 2023 (08:07:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0054.v1

Exploring the Interplay of New Energy Vehicle Enterprises, Consumers, and Government in the Context of the 'Dual Carbon' Target: An Evolutionary Game and Simulation Analysis

Rui Song, Xingjian Xue, Wanyi Qin, Wen Shi

Subject: Engineering, Energy And Fuel Technology Keywords: new energy vehicles; “dual carbon” targets; evolutionary games; government subsidies

Online: 5 April 2023 (10:15:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0020.v1

Expert System Integrating Rule-Based Reasoning to Voltage Control in PV-Rich Low Voltage Electric Distribution Networks

Vasilica Dandea, Gheorghe Grigoras

Subject: Engineering, Energy And Fuel Technology Keywords: expert system; rule-based reasoning; voltage control; On-load Tap Changer; distribution networks; photovoltaic prosumers

Online: 3 April 2023 (09:33:08 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.0014.v1

Energy Reductions Are Incompatible With Economic Growth

Patrick Moriarty, Damon Honnery

Subject: Engineering, Energy And Fuel Technology Keywords: climate change; decoupling; energy reductions; future; renewable energy; smart cities; smart grids; smart transport; sustainability; technological solutions

Online: 3 April 2023 (07:52:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0483.v1

Exploring Routes to Enhance the Calculation of Free Energy Differences via Nonequilibrium Work SQM/MM Switching Simulations by Using Hybrid Charge Intermediates Between MM and SQM Level of Theory or Non-linear Switching Schemes

Andreas Schoeller, H Lee Woodcock, Stefan Boresch

Subject: Engineering, Energy And Fuel Technology Keywords: free energy; indirect thermodynamic cycle; non-equilibrium simulation

Online: 28 March 2023 (10:20:44 CEST)

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Preprint REVIEW | doi:10.20944/preprints202301.0391.v2

A Mini-Review of Current Activities and Future Trends in Agrivoltaics

Alexander V. Klokov, Egor Yu. Loktionov, Yuri V. Loktionov, Vladimir Anatolevich Panchenko, Elizaveta S. Sharaborova

Subject: Engineering, Energy And Fuel Technology Keywords: agrivoltaics; photovoltaics; biogas; renewable energy; agriculture; livestock; horticulture; aquaculture

Online: 16 March 2023 (04:13:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0286.v1

Calibration and Uncertainty Quantification for Single-Ended Raman-Based Distributed Temperature Sensing: Case Study in a 800 m Deep Coaxial Borehole Heat Exchanger

Willem Mazzotti Pallard, Alberto Lazzarotto, José Acuña, Björn Palm

Subject: Engineering, Energy And Fuel Technology Keywords: DTS; Uncertainty; Fiber; Borehole; GSHP; BHE; DTRT; Monte Carlo; Coaxial; Deep

Online: 15 March 2023 (13:47:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0243.v1

Balancing Electricity Supply and Demand in a Carbon-Neutral Northern Europe

Lisa Göransson

Subject: Engineering, Energy And Fuel Technology Keywords: flexibility measures; variation management; VRE; electricity system modeling; wind power inte-gration; solar power integration; sector coupling

Online: 14 March 2023 (03:53:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0239.v1

Best Practice Data Sharing Guidelines for Wind Turbine Fault Detection Model Evaluation

Sarah Barber, Unai Izagirre Aizpitarte, Oscar Serradilla, Jon Olaizola Alberdi, Ekhi Zugasti Uriguen, Jose Aizpurua, Ali Eftekhari Milani, Frank Sehnke, Yoshiaki Sakagami, Charles Henderson

Subject: Engineering, Energy And Fuel Technology Keywords: Wind energy; Data sharing; Best practice; Machine learning; Model evaluation

Online: 14 March 2023 (02:34:33 CET)

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The digital era offers many opportunities to the wind energy industry and research community. Digitalisation is one of the key drivers for reducing costs and risks over the whole wind energy project life cycle. One of the largest challenges in successfully implementing digitalisation is the lack of data sharing and collaboration between organisations in the sector. In order to overcome this challenge, a new collaboration method called WeDoWind was developed in recent work. The main innovation of this method is the way it creates tangible incentives to motivate and empower different types of people from all over the world to actually share data and knowledge in practice. In this present paper, the challenges related to comparing and evaluating different SCADA data based wind turbine fault detection models are investigated by carrying out a new case study, the "WinJi Gearbox Fault Detection Challenge", based on the WeDoWind Method. Six new solutions were submitted to the challenge, and a comparison and evaluation of the results show that, in general, some of the approaches (Particle Swarm Optimisation algorithm for constructing health indicators, performance monitoring using Deep Neural Networks, Combined Ward Hierarchical Clustering and Novelty Detection with Local Outlier Factor and Time-to-failure prediction using Random Forest Regression) appear to have a high potential to reach the goals of the Challenge. However, there are a number of concrete things that would have to have been done by the Challenge providers and the Challenge moderators in order to ensure success. This includes enabling access to more details of the different failure types, access to multiple data sets from more wind turbines experiencing gearbox failure, provision of a model or rule relating fault detection times or a remaining useful lifetime to the estimated costs for repairs, replacements and inspections, provision of a clear strategy for training and test periods in advance, as well as provision of a pre-defined template or requirements for the results. These learning outcomes are used directly to define a set of best practice data sharing guidelines for wind turbine fault detection model evaluation. They can be used by the sector in order to improve model evaluation and data sharing in the future.

Preprint ARTICLE | doi:10.20944/preprints202303.0227.v1

A Roadmap with Strategic Policy toward Green Hydrogen Production: the Case of Iraq

Qusay Hassan, Aws Zuhair Sameen, Hayder M. Salman, Marek Jaszczur

Subject: Engineering, Energy And Fuel Technology Keywords: green hydrogen; roadmap; strategic policy; infrastructure; sustainable energy future

Online: 13 March 2023 (09:58:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0087.v1

Enhancing Oil Recovery by Polymeric Flooding with Purple Yam and Cassava Nanoparticles

Hasanain A. Al-Jaber, Agus Arsad, Muhammad Tahir, Mustafa Jawad Nuhma, Sulalit Bandyopadhyay, Abdulmunem R. Abdulmunem, Anis Farhana Abdul Rahman, Zakiah binti Harun, Agi Augustine

Subject: Engineering, Energy And Fuel Technology Keywords: enhanced oil recovery; polymer flooding; nano-polymer; cassava nanoparticles; purple yam nanoparticles

Online: 6 March 2023 (04:01:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202303.0052.v1

Improving the Bio-Oil Quality of Residual Biomass Pyrolysis by Chemical Activation: Effect of Alkalis and Acid Pre-treatment

Gerson Valdez Daniel, Flávio Pinheiro Valois, Sammy Jonatan Bremer, Kelly Christina Alves Bezerra, Lauro Henrique Hamoy Guerreiro, Marcelo Costa Santos, Lucas Pinto Bernar, Waldeci Paraguassu Feio, Luiz Gabriel Santos Moreira, Neyson Martins Mendonça, Douglas Alberto Rocha De Castro, Sergio Duvoisin Junior, Luiz Eduardo Pizarro Borges, Nélio Teixeira Machado

Subject: Engineering, Energy And Fuel Technology Keywords: Açaí seeds; Chemical activation; Pyrolysis; Acidity; Liquid hydrocarbons

Online: 3 March 2023 (02:06:34 CET)

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This work investigated the effect of temperature and acid or alkalis chemical activation by pyrolysis of Açaí seeds (Euterpe Oleraceae, Mart.) on the yield of bio-oil, hydrocarbon content of bio-oil, and chemical composition of aqueous phase. The experiments were carried out at 350, 400, and 450 °C and 1.0 atmosphere, KOH and HCl activation, in laboratory scale. The acidity of bio-oils and aqueous phases determined by AOCS methods, while the chemical composition of bio-oils and aqueous phase by GC-MS and FT-IR. The bio-char characterized by XRD. For the activation with KOH, the XRD analysis identified the presence of Kalicinite (KHCO3), the dominant crystalline phase in bio-char, while an amorphous phase was identified in bio-chars for the activation with HCl. The yield of bio-oil, for the pyrolysis of Açaí seeds activated with KOH, varied between 3.19 and 6.79 (wt.%), showing a smooth exponential increase with temperature. The acidity of bio-oil varied between 12.3 and 257.6 mgKOH/g, decreasing exponentially with temperature, while the acidity of aqueous phase lies between 17.9 and 118.9 mgKOH/g, showing and exponential decay behavior with temperature, demonstrating that higher temperatures favor not only the yield of bio-oil but also bio-oils with lower acidity. For the pyrolysis experiments activated with HCl, the yield of bio-oil varied between 2.13 and 3.37 (wt.%), decreasing linearly with temperature, while that of gas phase varied between 17.91 and 37.94 (wt.%), increasing linearly with temperature. The acidity of bio-oil varied between 127.1 and 218.5 mgKOH/g, increasing with temperature, showing that higher temperatures did not favor the yield of bio-oil and bio-oils acidity. For the chemical activation with KOH, the FT-IR analysis of bio-oils identified the presence of chemical groups characteristics of hydrocarbons and oxygenates, while that of aqueous phase only groups characteristics of oxygenates. For the chemical activation with HCl, the FT-IR analysis of bio-oil and aqueous phases identified only the presence of groups characteristics of oxygenates. For the experiments with KOH activation, the GC-MS of bio-oil identified the presence of hydrocarbons (alkanes, alkenes, cycloalkanes, cycloalkenes, and aromatics) and oxygenates (carboxylic acids, phenols, ketones, and esters). The concentration of hydrocarbons varied between 10.19 to 25.71 (area.%), increasing with temperature, while that of oxygenates from 52.69 to 72.15 (area.%), decreasing with temperature. For the experiments with HCl activation, the GC-MS of bio-oil identified only the presence of oxygenates. Finally, it can be concluded that chemical activation of Açaí seeds with KOH favors the not only the yield of bio-oil but also the content of hydrocarbons while activation with HCl produced bio-oils with only oxygen compounds.

Preprint REVIEW | doi:10.20944/preprints202302.0256.v1

Pathways for the Valorization of Animal and Human Waste to Biofuels, Sustainable Materials and Value-Added Chemicals

Jude A. Okolie, Toheeb Jimoh, Olugbenga Akande, Patrick U. Okoye, Chukwuma C. Ogbaga, Adekunle A. Adeleke, Peter P. Ikubanni, Fatih Gulec, Andrew Nosakhare Amenaghawon

Subject: Engineering, Energy And Fuel Technology Keywords: Thermochemical conversion; biological conversion; human excreta; waste-to-energy; livestock manure

Online: 15 February 2023 (08:45:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202302.0216.v1

iMAGINE – Visions, Missions, and Steps for Successfully Delivering the Nuclear System of the 21st Century

Bruno Merk, Dzianis Litskevich, Anna Detkina, Omid Noori-kalkhoran, Lakshay Jain, Elfriede Derrer-Merk, Daliya Aflyatunova, Greg Cartland-Glover

Subject: Engineering, Energy And Fuel Technology Keywords: Nuclear; nuclear energy; nuclear reactors; nuclear waste management; iMAGINE; strategic development; vision development; mission development

Online: 13 February 2023 (11:26:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0547.v2

Behaviour of Premixed Sooting-Flame in A High-Pressure Burner

Ahmad Saylam

Subject: Engineering, Energy And Fuel Technology Keywords: CFD simulation; flat flame; high-pressure burner; soot formation; premixed flame

Online: 1 February 2023 (06:46:18 CET)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202301.0584.v1

Assessment of Wind Speed Statistics in Samaria Region

Sergei Kolesnik, Yossi Rabinowitz, Michael Byalsky, Asher Yahalom, Alon Kuperman

Subject: Engineering, Energy And Fuel Technology Keywords: Wind statistics assessment; Weibull distribution; Rayleigh distribution.

Online: 31 January 2023 (11:30:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0547.v1

Behaviour of Premixed Sooting-Flame in A High-Pressure Burner

Ahmad Saylam

Subject: Engineering, Energy And Fuel Technology Keywords: CFD simulation; flat flame; high-pressure burner; soot formation; premixed flame

Online: 30 January 2023 (09:16:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0417.v1

Power Production and Blade Fatigue of a Wind-Turbine Array Subjected to Active Yaw Control

Mou Lin, Fernando Porté-Agel

Subject: Engineering, Energy And Fuel Technology Keywords: wind power; wind turbine fatigue; active yaw control

Online: 24 January 2023 (02:52:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0414.v1

The Agrivoltaic Potential of Canada

Uzair Jamil, Abigail Bonnington, Joshua M. Pearce

Subject: Engineering, Energy And Fuel Technology Keywords: agriculture; agrivoltaic; climate policy; Canada; energy policy; farming; land use; photovoltaic; solar energy; renewable energy

Online: 23 January 2023 (12:16:00 CET)

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Preprint REVIEW | doi:10.20944/preprints202301.0391.v1

A Review of Current Activities and Future Trends in Agrivoltaics

Alexander V. Klokov, Egor Yu. Loktionov, Yuri V. Loktionov, Vladimir Anatolevich Panchenko, Elizaveta S. Sharaborova

Subject: Engineering, Energy And Fuel Technology Keywords: agrivoltaics; photovoltaics; biogas; renewable energy; agriculture; livestock; horticulture; aquaculture.

Online: 23 January 2023 (02:13:35 CET)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202205.0284.v2

Design of Non-Tactical Deployable 20 Gwh (17.20841 Kilo Ton TNT) Fusion Device - Energy Basis

Muhammad Musaddique Ali Rafique

Subject: Engineering, Energy And Fuel Technology Keywords: Fusion; energy; focus; release; shock wave; ignition

Online: 16 January 2023 (01:57:00 CET)

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Preprint ARTICLE | doi:10.20944/preprints202301.0111.v1

Economic Analysis of Sustainable Transportation Transitions: Case Study of the University of Saskatchewan Ground Services Fleet

George Aniegbunem, Andrea Kraj

Subject: Engineering, Energy And Fuel Technology Keywords: sustainability; transportation; fleet management; campus; university; renewable energy; energy transition; economic analysis; risk management; modelling; ghg emissions reduction

Online: 6 January 2023 (02:27:18 CET)

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Preprint REVIEW | doi:10.20944/preprints202212.0568.v1

Modern Kiln Burner Technology in the Current Energy Climate: Pushing the Limits of Alternative Fuel Substitution

Maria Margarida Pires dos Santos Mateus, Duarte Cecilio, Teresa Neuparth

Subject: Engineering, Energy And Fuel Technology Keywords: cement; alternative fuels; burner; sustainability; energy transition

Online: 30 December 2022 (04:11:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0538.v1

Drainage Research of Different Tube Depth in Horizontal Gas Well

Xiuwu Wang, Wenmin Ma, Wei Luo, Ruiquan Liao

Subject: Engineering, Energy And Fuel Technology Keywords: horizontal gas well; liquid-carrying model; tubing depth; gas drainage; fluid energy

Online: 28 December 2022 (10:01:08 CET)

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Preprint REVIEW | doi:10.20944/preprints202212.0406.v1

Physical and Chemical Features of Hydrogen Combustion and their Influence on the Characteristics of Gas Turbine Combustion Chambers

Ivan Zubrilin, Aleksey Kuznetsov, Konstantin Tsapenkov, Dmitrii Antonov, Pavel Strizhak, Denis Yakushkin, Aleksandr Ulitichev, Vladimir Dolinskiy, Mario Hernandez Morales, Elena Shchepakina

Subject: Engineering, Energy And Fuel Technology Keywords: hydrogen; combustion chamber; emission; gas turbine engines; flame blowout

Online: 22 December 2022 (01:54:28 CET)

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Preprint REVIEW | doi:10.20944/preprints202212.0138.v1

A Critical Review on Briquettes Developed from Spent Coffee Ground Wastes

Gokul Raghavendra Srinivasan, Aditya Mahajan, Rajiv Seth, Rakesh Mahajan

Subject: Engineering, Energy And Fuel Technology Keywords: Spent coffee grounds; SCG Briquettes; SCG Biodiesel; Caffeine; Residual Oil; Irregular Particle Size

Online: 8 December 2022 (01:42:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0095.v1

An Experimental Investigation of the Thermal and Economic Performance of PCM-Embedded Hybrid Water Heater under Saharan Climate

Sidi Mohammed El Amine Bekkouche, Rachid Djeffal, Mohamed Kamal Cherier, Maamar Hamdani, Zohir Younsi, Saleh Al-Saadi, Mohamed Zaiani

Subject: Engineering, Energy And Fuel Technology Keywords: hybrid DHW system; water heater; PCM; melting temperature; latent heat storage; produced water cost

Online: 6 December 2022 (08:51:05 CET)

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Preprint REVIEW | doi:10.20944/preprints202212.0071.v1

Comprehensive Review on Bio-Briquettes Developed from Processed Cashew Nut Shell Wastes

Gokul Raghavendra Srinivasan, Aditya Mahajan, Rajiv Seth, Rakesh Mahajan

Subject: Engineering, Energy And Fuel Technology Keywords: Cashew Nut Shells; Shell Press Cakes; CNS char; Cashew Nut Shell Liquid; CNS Briquettes; Calorific Value

Online: 5 December 2022 (09:15:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0485.v1

Economic Analysis of Thermal Catalytic Process of Palm Oil (Elaeis Guineesensis, Jacq) and Soap Phase Residue of Neutralization Process of Palm Oil (Elaeis Guineensis, Jacq)

Anderson Rocha Amaral, Lucas Pinto Bernar, Caio Campos Ferreira, Anderson Matias Pereira, Wenderson Gomes Dos Santos, Lia Martins Pereira, Marcelo Costa Santos, Fernanda Paula da Costa Assunção, Neyson Martins Mendonça, José Almir Rodrigues Pereira, Sílvio Alex Pereira Da Mota, Andréia de Andrade Mâncio, Sergio Duvoisin Jr., Luiz Eduardo Pizarro Borges, Nélio Teixeira Machado, Douglas Alberto Rocha De Castro

Subject: Engineering, Energy And Fuel Technology Keywords: Palm oil; Neutralizing sludge, Thermal processing; Biofuels; Economic analysis; Technical fea-sibility.

Online: 28 November 2022 (01:29:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0458.v1

Hydrogen Production System through Dimethyl Ether Autothermal Reforming based on Model Predictive Control

Tie-qing Zhang, Seunghun Jung, Young-Bae Kim

Subject: Engineering, Energy And Fuel Technology Keywords: authjothermal reforming; model predictive control; dimethyl ether; hydrogen production

Online: 24 November 2022 (10:15:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0453.v1

The Direct Effect of Enriching the Gaseous Combustible with 23% Hydrogen in Condensing Boilers’ Operation

Răzvan Calotă, Nicolae N. Antonescu, Dan-Paul Stănescu, Ilinca Năstase

Subject: Engineering, Energy And Fuel Technology Keywords: CO2 emissions; hydrogen (H2) combustible; energy efficiency; decarbonization

Online: 24 November 2022 (06:17:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0402.v1

Effect of Process Conditions on Hydro-Char Characteristics and Chemical Composition of Aqueous and Gaseous Products by Hydrothermal Processing of Corn Stover with Hot Compressed H₂O: Structural Evolution of Hydro-Char and Kinetics of Corn Stover Decomposition

Tiago Teribele, Maria Elizabeth Gemaque Costa, Conceição de Maria Sales Da Silva, Lia Martins Pereira, Lucas Pinto Bernar, Douglas Alberto Rocha De Castro, Fernanda Paula da Costa Assunção, Marcelo Costa Santos, Isaque Wilkson de Sousa Brandão, Clícia Joana Neves Fonseca, Maja Shultze, Thomas Hofmann, Sammy Jonatan Bremer, Nélio Teixeira Machado

Subject: Engineering, Energy And Fuel Technology Keywords: Corn Stover; Hydrothermal carbonization; Hydro-char characterization; Kinetics of major compounds; Structural evolution.

Online: 22 November 2022 (03:13:44 CET)

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In this work, the effect of reaction time and biomass-to-H2O ratio on the structural evolution of hydro-char and kinetic of by hydrothermal processing of corn Stover with hot compressed H2O, have been systematically investigated. The experiments were carried out at 250 °C, heating rate of 2.0 °C/min, biomass-to-H2O ratio of 1:10, and reaction times of 60, 120, and 240 minutes, and at 250 °C, 240 minutes, heating rate of 2.0 °C/min, and biomass-to-H2O water ratio of 1:10, 1:15, and 1:20, using a pilot scale stirred tank reactor of 5 gallon. The characterization of solid phase products performed by thermo-gravimetric analysis, scanning electron microscope, energy dispersive X-ray spectroscopy, X-ray diffraction, and elemental analysis (C, N, H, S). The physical-chemistry properties of solid phase analyzed in terms of dry matter (DM), total organic content (TOC), and ash. The yields of solid and gas phases decrease linearly with decreasing biomass-to-H2O ratio, while that of liquid phases increases linearly. For constant biomass-to-H2O ratio, the yields of solid, liquid, and gaseous reaction products varied between 52.97 and 35.82% (wt.), 44.84 and 54.59% (wt.), and 2.19 and 9.58% (wt.), respectively. The yield of solids decreases exponentially by decreasing the reaction time, while the yields of liquid and gas phases increase exponentially. For constant biomass-to-H2O ratio, TG/DTG curves shows that reaction time of 60 minutes was not enough to carbonize corn Stover. For constant reaction time, TG/DTG curves shows that increasing the H2O-to-biomass ratio worse the carbonization of corn Stover. For constant biomass-to-H2O ratio, the SEM images show the main morphological structure of the corn Stover remains practically unchanged, while for constant reaction time, SEM images show that plant microstructure retains part of its original morphology, demonstrating that a decrease on biomass-to-H2O ratio worse the carbonization of corn Stover. For constant biomass-to-H2O ratio, the EDX analysis shows that the carbon content in hydro-char increases with reaction time, while for constant reaction time, the carbon content decreases with increasing biomass-to-H2O ratio. The kinetic of corn Stover degradation was correlated with a pseudo-first order exponential model, exhibiting a root-mean-square error (r2) of 1.000, demonstrating that degradation kinetics of corn Stover with hot compressed H2O, expressed as hydro-char formation, is well described by an exponential decay kinetics.

Preprint ARTICLE | doi:10.20944/preprints202211.0387.v1

A Novel Energy Optimization System for Renewable Demand using Heuristics, Distributed Systems, and Machine Learning in a Smart City

P. Duraipandy, A V Prabhu, Mohammed Alshehri, Sidheswar Routray, Hisham Abdul Rahman Abdullah Al Hamyani, Majed Alowaidi, Satish Kumar L

Subject: Engineering, Energy And Fuel Technology Keywords: renewable energy, Internet of Thinks, renewable energy storage, smart city

Online: 21 November 2022 (09:53:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0317.v1

A HELIOS Based Dynamic Salt Clean-Up Study Analysing the Effects of a Plutonium Based Initial Core for IMAGINE

Bruno Rudi Merk, Anna Detkina, Dzianis Litskevich, Omid Noori-kalkhoran, Lakshay Jain, Greg Cartland-Glover

Subject: Engineering, Energy And Fuel Technology Keywords: nuclear; nuclear energy; nuclear reactors; reactor physics; modelling and simulation; molten salt reactors; nuclear chemistry; fission products; salt clean-up; plutonium management

Online: 17 November 2022 (01:11:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0067.v1

Adsorption and Displacement of Methane in Carbon Nanoslits: Insights from Molecular Simulations

Dias Bekeshov, Sultan Ashimov, Yanwei Wang, Lei Wang

Subject: Engineering, Energy And Fuel Technology Keywords: Methane; adsorption; shale gas; coalbed methane; slit pore; carbon dioxide; modelling; Grand Canonical Monte Carlo; Molecular Dynamics.

Online: 3 November 2022 (03:38:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0029.v1

Usage of GAMS-based Digital Twins and Clustering to Improve Energetic Systems Control

Timothé Gronier, William Maréchal, Christophe Geissler, Stéphane Gibout

Subject: Engineering, Energy And Fuel Technology Keywords: Energy Management System; Digital Twins; General Additive Models; Green H2.

Online: 1 November 2022 (10:08:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202210.0273.v2

Specification and Classification of Pelletised Dried Sewage Sludge: Identifying its Key Properties as a Renewable Material for Enabling Environmentally Non-harmful Energy Utilisation

Vesna Mislej, Barbara Novosel

Subject: Engineering, Energy And Fuel Technology Keywords: alternative solid recovered fuel; classification; pelletised sewage sludge; pollution prevention; renewable material; sustainable energy production

Online: 31 October 2022 (01:25:54 CET)

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Preprint REVIEW | doi:10.20944/preprints202210.0405.v1

Energy Policy for Agrivoltaics in Alberta Canada

Uzair Jamil, Joshua M. Pearce

Subject: Engineering, Energy And Fuel Technology Keywords: agriculture; agrivoltaic; Canada; energy policy; farming; Alberta; photovoltaic; solar energy

Online: 26 October 2022 (09:19:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0304.v1

Oxygenated Fuels Blending Effects on Gasoline Engine Performance and Emissions: An Experimental Study

Mehrez Gassoumi, Zouhair Boutar, Fakher Hamdi, Mahdi Dhawi, Zouhaier Khalfet, Aliya Fazal, Ridha Ennetta, Raja Mazuir Raja Ahsan Shah, Hakan Serhad Soyhan

Subject: Engineering, Energy And Fuel Technology Keywords: engine; gasoline; oxygenated fuel; blend; experimental study

Online: 20 October 2022 (11:01:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0303.v1

Flexible Loads Scheduling Algorithms for Renewable Energy Communities

Tiago Fonseca, Luis Lino Ferreira, Jorge Landeck, Lurian Klein, Paulo Sousa

Subject: Engineering, Energy And Fuel Technology Keywords: Energy Community, Scheduling, Renewable energy, Flex-Offers, Algorithms

Online: 20 October 2022 (11:01:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0273.v1

Specification and Classification of Pelletised Dried Sewage Sludge: Identifying its Key Properties as a Renewable Material for Enabling Environmentally Non-harmful Energy Utilisation

Vesna Mislej, Barbara Novosel

Subject: Engineering, Energy And Fuel Technology Keywords: alternative solid recovered fuel; classification; pelletised sewage sludge; pollution prevention; renewable material; sustainable energy production

Online: 19 October 2022 (07:59:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0252.v1

Assessing Wind Farm Site Suitability in Bangladesh: A GIS-AHP Approach

Md. Rabiul Islam, Md. Rakibul Islam, H. M. Imran

Subject: Engineering, Energy And Fuel Technology Keywords: wind farm; GIS; AHP; Bangladesh

Online: 18 October 2022 (05:54:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0249.v1

Integration of Ion Transport Membrane with Conventional Powerplant to Obtain Pure Oxygen and More Efficient Power Production

Arnob Das, Susmita Datta Peu

Subject: Engineering, Energy And Fuel Technology Keywords: IGCC; Ion Transport Membrane; air separator; integration; gasifier; HRSG

Online: 18 October 2022 (05:12:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0115.v1

Characteristics of the Fracture Process Zone for Reservoir Rock with Various Heterogeneity

Hongran Chen, Jingrui Niu, Mengyang Zhai

Subject: Engineering, Energy And Fuel Technology Keywords: Mode I crack; fracture process zone; heterogeneity; discrete element method; reservoir fracability

Online: 10 October 2022 (07:16:19 CEST)

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Preprint REVIEW | doi:10.20944/preprints202209.0480.v1

Biomimetic Approaches to “Transparent” Photovoltaics: Current and Future Applications

Michele Pompilio, Ioannis Ierides, Franco Cacialli

Subject: Engineering, Energy And Fuel Technology Keywords: transparent photovoltaics; semi-transparent photovoltaics; biomimetic

Online: 30 September 2022 (08:25:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0449.v1

Numerical Study of the Electromagnetic Field Distribution in Pulsed Power Plasma Stimulation Technique - Potential Feasibility of Underground Detective and Diagnostic Tool

Yue Xiao, Waylon House, Mohamed Y. Soliman, Akif Ibraguimov

Subject: Engineering, Energy And Fuel Technology Keywords: pulsed power plasma discharge; electromagnetic; COMSOL; numerical simulation

Online: 29 September 2022 (03:32:36 CEST)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202209.0404.v1

Forecasting Energy Consumption Time Series Using Recurrent Neural Network in Tensorflow

Munshi Md Shafwat Yazdan, Marzieh Khosravia, Shah Saki, Md Abdullah Al Mehedi

Subject: Engineering, Energy And Fuel Technology Keywords: Recurrent Neural Network; Renewable Energy; Power consumption; Open Power System Data; Multivariate Exploratory; Time series forecasting

Online: 27 September 2022 (02:44:29 CEST)

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Preprint REVIEW | doi:10.20944/preprints202209.0302.v1

Enhancing the Potential of Smart Building for General Hospital: A Case Study in Malaysian Hospital

Mohd Faisal Baharuddin, Chin Haw Lim, Ahmad Fazlizan

Subject: Engineering, Energy And Fuel Technology Keywords: digital twin; energy saving; simulation; solar energy; smart building

Online: 20 September 2022 (10:16:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0258.v1

Carboniferous-Early Permian Heterogeneous Porous Carbonate Reservoirs Prediction and Sedimentary Analysis in the Central Uplift of the South Yellow Sea Basin

Shuyu Wu, Qiliang Sun, Jun Liu, Jianwen Chen

Subject: Engineering, Energy And Fuel Technology Keywords: Sedimentary; Heterogeneous porous carbonate reservoirs; Isotope analysis; Carboniferous-Early Permian; Central Uplift of the South Yellow Sea Basin

Online: 19 September 2022 (04:45:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0243.v1

Economic Analysis of Thermal Catalytic Process of Palm oil (Elaeis Guineesensis, Jacq) and Palm Oil Neutralizing Sludge

Anderson Rocha Amaral, Lucas Pinto Bernar, Caio Campos Ferreira, Dyenny Ellen Lima Lhamas, Anderson Matias Pereira, Wenderson Gomes Dos Santos, Lia Martins Pereira, Marcelo Costa Santos, Fernanda Paula da Costa Assunção, Marco Jhonathan Lobato Marques, Hélio da Silva Almeida, Neyson Martins Mendonça, Antônio de Noronha Tavares, José Almir Rodrigues Pereira, Sílvio Alex Pereira Da Mota, Andréia de Andrade Mâncio, Douglas Alberto Rocha De Castro, Sergio Duvoisin Jr., Luiz Eduardo Pizarro Borges, Nélio Teixeira Machado

Subject: Engineering, Energy And Fuel Technology Keywords: : Palm oil; Neutralizing sludge, Thermal processing; Biofuels; Economic analysis; Technical fea-sibility.

Online: 16 September 2022 (08:37:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0054.v2

Extreme Learning Machine-Based Diagnostics for Component Degradation in a Microturbine

Nicola Menga, Akhila Mothakani, Maria Grazia De Giorgi, Radoslaw Przysowa, Antonio Ficarella

Subject: Engineering, Energy And Fuel Technology Keywords: ELM; ANN; compressor; turbine; degradation; microturbine; engine health management

Online: 12 September 2022 (10:12:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0086.v1

Study of the Economic Feasibility of Thermal Catalytic Pro-cess of Açaí Seeds (Euterpe Oleracea) and Scum from Grease Traps

Anderson Rocha Amaral, Lucas Pinto Bernar, Caio Campos Ferreira, Romero Moreira De Oliveira, Anderson Mathias Pereira, Lia Martins Pereira, Marcelo Costa Santos, Fernanda Paula da Costa Assunção, Kelly Christina Alves Bezerra, Hélio da Silva Almeida, Neyson Martins Mendonça, Antônio de Noronha Tavares, José Almir Rodrigues Pereira, Sílvio Alex Pereira Da Mota, Douglas Alberto Rocha De Castro, Sérgio Duvoisin Jr., Luiz Eduardo Pizarro Borges, Nélio Teixeira Machado

Subject: Engineering, Energy And Fuel Technology Keywords: Scum from fat box; Açaí seeds; Thermal processing; Biofuels; Economic analysis; Tech-nical feasibility

Online: 6 September 2022 (10:08:02 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0081.v1

Microstructure and Cyclic Oxidation Resistance of Ce-Si Modified Aluminide Coating Deposited by Pack Cementation on Inconel 738LC

Parviz Nourpoor, Soheila Javadian, Alireza Sabour Rouh Aghdam, Farzin Ghadami

Subject: Engineering, Energy And Fuel Technology Keywords: pack cementation; Ce-Si modified aluminide coating; cyclic oxidation resistance

Online: 6 September 2022 (03:57:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0015.v1

Eliciting Stakeholders’ Requirements for Future Energy Systems: A Case Study of Heat Decarbonisation in the UK

Lai Fong Chiu, Robert John Lowe

Subject: Engineering, Energy And Fuel Technology Keywords: energy policy; stakeholder requirements; adaptive/transformative; heat decarbonisation; energy system architecture

Online: 1 September 2022 (09:15:02 CEST)

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Preprint REVIEW | doi:10.20944/preprints202208.0448.v1

Deep Learning in State of Charge Estimation for Li-ion Battery: A Review

Chen Zhong, Dawei Zhang, Peijuan Xu, Yiyang Tian

Subject: Engineering, Energy And Fuel Technology Keywords: Electric Vehicles; Review; SOC Estimation; Deep Learning; Lithium-ion Battery

Online: 26 August 2022 (04:43:03 CEST)

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